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Exam 300-625 topic 1 question 25 discussion

Actual exam question from Cisco's 300-625
Question #: 25
Topic #: 1
[All 300-625 Questions]

Refer to the exhibit.

Which configuration change improves the ability of the link to recover from frame loss?

  • A. Increase the reset timeout.
  • B. Enable selective acknowledgment.
  • C. Increase the send buffer size to 15000 KB.
  • D. Disable PMTU discovery.
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Suggested Answer: B 🗳️
by promisq at Feb. 17, 2022, 2:49 p.m.

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promisq
3 years, 2 months ago
TCP may experience poor performance when multiple packets are lost within one window. With the limited information available from cumulative acknowledgments, a TCP sender can only learn about a single lost packet per round trip. A selective acknowledgment (SACK) mechanism helps overcome the limitations of multiple lost packets during a TCP transmission.
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